What spark plugs do you recommend

[Death Trap]

Got the car on the lift doing longtubes and some tune-up stuff. Whats spark plugs do you reccomend. Its for my daily driver 89 LX 5ltr I always stay with oem on the european cars I work on and build unless its forced induction or something far from stock.

 

[tannerc91gt]

nitrous plugs quick reference guide - Corral Forums

that lists the appropriate plug for most brands of plugs and for different heads.

 

[Cobra1741]

NGK tr55.

 

[HISSIN50]

What heads and power adders do you run?

 

[Mustang5L5]

Copper stock Motorcraft plugs would be my recommendation...

But it's kinda hard to say for sure without knowing the mods on the car. If it's stock with a few bolt-ons, then i stick to my recommendation. If it's got heads, cam, Nitrous, etc...then i might go something different

 

[bmo37]

Motorcraft copper plugs or Champion

 

[ttopstang]

autolite 25's

 

[HotFox]

I have had excellent luck with NGK V Power mostly for racing, but street use as well. NGK has a excellent tech line that you can call and give your engine set up and they will recommend a plug and one step colder, one warmer.

Scott